首页|Ligand Modified and Light Switched On/Off Single-Chain Magnets of{Fe2Co} Coordination Polymers via Metal-to-Metal Charge Transfer

Ligand Modified and Light Switched On/Off Single-Chain Magnets of{Fe2Co} Coordination Polymers via Metal-to-Metal Charge Transfer

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It is still a formidable challenge to simultaneously switch single-chain magnet(SCM)behavior via li-gand modification and light irradiation in the field of molecular spintronics.Herein,we present a ligand-bridged layer {[pzTpFe(CN)3]4Co2(Bib)4}·3H2O(1;pzTp,tetra-kis(1-pyrazolyl)borate;Bib,1,4-bis-(1H-imidazol-1-yl)benzene)and a well-isolated double chain {[pzTpFe(CN)3]2Co(Bpi)2}·CH3CN·4H20(2;Bpi,1-Biphenyl-4-yl-1H-imidazole)that display re-versible metal-to-metal charge transfer(MMCT)be-tween FeⅢLS(μ-CN)CoⅡHS(μ-NC)FeⅢLS(LS,low spin;HS,high spin)and FeⅢLS(μ-CN)CoⅢLS(μ-NC)FeⅡLs lin-kages under alternating irradiation with 808 and 532 nm lasers.The bidirectional light irradiations induces significant changes in anisotropy and intra-chain magnetic interactions,resulting in the on/off switching of SCM behavior with observable hystere-sis loops by 808 and 532 nm light irradiations for both compounds.Because of the ligand modifica-tion,the SCM property of 2 with the monodentate ligand is greatly improved with a correlation length increased to 83,which is the largest correlation length among all reported light actuated SCMs.Furthermore,the influence of ligand modification on their thermally induced MMCT is also discussed.This study provides a rational approach for the swift and reversible control of SCM behavior via ligand modi-fied and light induced MMCT,which is crucial to the future technological demand for high-density data storage and processing.

bidirectional light switchingcorrelation lengthligand modificationmetal-to-metal charge transfersingle-chain magnets

Ji-Xiang Hu、Hai-Lang Zhu、Yin-Shan Meng、Jiandong Pang、Na Li、Tao Liu、Xian-He Bu

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School of Materials Science and Engineering,Nankai University,Tianjin 300350

College of Chemistry and Chemical Engineering,Qingdao University,Qingdao 266071

State Key Laboratory of Fine Chemicals,Dalian University of Technology,Dalian 116024

国家自然科学基金国家自然科学基金国家自然科学基金国家自然科学基金国家自然科学基金国家自然科学基金国家自然科学基金国家自然科学基金China National Postdoctoral Program for Innovative Talents

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2023

10.31635/ccschem.022.202202023

中国化学会会刊(英文)

中国化学会会刊(英文)

CSCD
ISSN：
年,卷(期)：2023.5(4)
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